No idea what the transmission itself uses. BMW changed fluids several times throughout the life of the E53. My 01 used Texaco ETL8072B, which is made of unobtanium. I changed the trans fluid/filter and cleaned the pan about 15k miles ago (at 110k) and used Valvoline Maxlife Dex/Merc. No issues and it shifts fine; Valvoline's spec says it is compatible with Texaco ETL8072B.

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Quote:

Originally Posted by Fast Bob

JUST...LOOK...UNDER...THE...CAR....for Chrissakes....it`s like checking to see if a dog is male or female....

Quote:

Originally Posted by smolck

A bimmer with forced induction should have a proper manual gearbox. Anything less is like french kissing your sister.